Matthew Poole and continuators on Acts 19:5

5 When they heard this, they were baptized in the name of the Lord Jesus.

The Disciples, or those that Iohn preached to, (for these Ephesians were not amongst those few that Paul Baptized, 1 Cor. 1.14.) who when they heard what the Baptist said in the foregoing Virse, they were Baptized; as in the same terms 'tis said, Chap. 2.37. when they heard what St. Peter had said, they were pricked in their hearts, &c. and were Baptized. As for Pauls imposing his hands upon them that are said here to be Baptized, it might very well be, That the Twelve Disciples, Verse 7. might have been Baptized by Iohn, and now Receive the Holy Ghost in those extraordinary Gifts by the laying on of the hands of St. Paul: for to what end should these Disciples who were Baptized with St. Iohns Baptism, be again Baptized by Paul? It is true, they had further manifestations of the Mystery of the Gospel brought unto them; but if men should be Baptized for every degree of Knowledg or Grace which they do acquire, how many Baptisms had they need to have, who ought daily to grow in Grace and in Knowledg? It is evident, that the Apostles themselves were only Baptized with the Baptism of Iohn, for there were none else to Baptise them. And Baptism being an Ordinance for our Regeneration, and New Birth; as we can be born but once in the Flesh, we can be but once also born in the Spirit; and no more may Christians be Baptized twice, than the Iews could be twice Circumcised.